If you get water in your middle ear (past the ear drum) you will develop vertigo and also get an inner ear infection from the bacteria and viruses in the water. Especially Ocean water.
Cold water in one side of your Middle ear and not in the other will develop an imbalance and you'll lose your sense of balance (both in vision and feel) which is very dangerous while scuba diving. It will essentially be like spinning in a circle for 30mins and stopping suddenly. You won't be able to stand up, swim straight, or function. Your ears play an important part in your sense of balance and coordination.
There are procedures to close an eardrum that you might qualify for. Would have to ask your doctor. But that leaves your repaired eardrum stiff.
With that, there's no guarantee it will allow you to scuba dive, as you have to equalize as you dive down, because of the water pressure at depth. A stiff eardrum can just burst again as you're equalizing; since that flexes your ear drums a bit.
Next step would be to visit an Ear-Nose-Thoat (ENT) doctor and ask about your options to allow you to scuba dive. You will also need a doctor who specializes in Dive medicine to advise the ENT about what will qualify you. As the ENT alone won't know if he isn't a diver himself.
